Key ring



FIG. 1 is a front right isometric view showing my new design;

FIG. 2 is a right side view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a front right isometric view showing a second embodiment of my new design;

FIG. 5 is a right side view of FIG. 4; and,

FIG. 6 is a rear view of FIG. 4. 

The ornamental design for a key ring, as shown. 